Need Resume Advice

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I'm a semi new LPN that has been recently separated from previous employer. I've worked in 2 ltc facilities for 5 months and 7 months respectively and as a pdn pediatrics for 4 mo's. I'm worried that I may be viewed as a job hopper. I have reasonable explanations for my moves and I have good references. It's a tight job market and I wonder if I should leave off my first employer.. ?

In a sea of resumes I would view this as a job hopper and someone I would probably not call for an interview, especially if I had others to choose from that had more experience and more longevity. That first job wouldn't not sway my opinion one way or another.